(19)

(11)

EP 0 678 164 A1

(12)

(43) Date of publication: 25.10.1995 Bulletin 1995/43 (21) Application number: 92910058.0 (22) Date of filing: 08.04.1992

(51) International Patent Classification (IPC):  F04B( . ) F04B 1/ 047( . ) F04B 9/ 04( . ) F04B 1/ 04( . ) F04B 1/ 053( . ) F04B 43/ 02( . ) (86) International application number: PCT/NL1992/000066 (87) International publication number: WO 1992/018769 (29.10.1992 Gazette 1992/27)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IT LI LU MC NL SE (30) Priority: 10.04.1991 NL 19910000629 (71) Applicant: GENTEC B.V NL-5692 DC Son (NL)	(72) Inventors: JOOSSE, Wiecher, Jan, Heiko NL-5682 EG Best (NL) SCHERMERS, Albertus, Cornelis NL-4286 LK Almkerk (NL) GROEN, Wijnand, Franciscus NL-5691 LL Son en Breugel (NL) (74) Representative: de Bruijn, Leendert C.  Nederlandsch Octrooibureau P.O. Box 29720 NL-2502 LS Den Haag NL-2502 LS Den Haag (NL)